[Bug c++/70675] [6 Regression] compare-debug failure building LLVM

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70675

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Does removing "deletable" from the constexpr_call_table fix it?  Does playing
with GC parameters allow further reduction?